package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.util.DigestUtils;

import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Resource
    private EmployeeService employeeService;

    /*员工登陆*/
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request , @RequestBody Employee employee){
        //1.将页面提交的密码password进行MD5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        //查询数据库的用户名是否存在
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果为null则将返回失败结果给前端
        if (emp == null){
            return R.error("登陆失败");
        }

        //4.比较密码是否相同
        if (!emp.getPassword().equals(password)){
            return R.error("登陆失败");
        }

        //5.查看员工状态，1表示正常，0表示已禁用
        if (emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6.登陆成功，将员工的id存入session并返回登陆成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /*员工退出*/
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /*新增员工信息*/
    @PostMapping
    public R<String> sava(HttpServletRequest request, @RequestBody Employee employee){
        //设置默认初始密码123456，将密码用MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //设置创建时间和修改时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //获取当前登陆的用户id
        //Long empId = (Long) request.getSession().getAttribute("employee");

        //设置创建人和修改人
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);

        //添加员工
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /*员工信息分页查询*/
    @GetMapping("/page")
    public R<Page> page(int page ,int pageSize ,String name){
        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    //根据id修改员工状态信息
    @PutMapping
    public R<String> update(HttpServletRequest request ,@RequestBody Employee employee){
        //获取当前登录的用户id
        Long empId = (Long)request.getSession().getAttribute("employee");
        //设置修改的时间
        //employee.setUpdateTime(LocalDateTime.now());
        //设置修改人
        //employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /*根据id查询员工信息*/
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if (employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应的员工信息");
    }
}
